Liquid-distributer for refrig eratin g - m ac h in es



(No Model.)

W. W. DOOLITTLE.

LIQUID DISTRIBUTER FOR REFRIGERATING MACHINES;

Patented Oct. 31,1882.

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UNTTED STATES ATENT rites.

\VILLIAM \V. DOOLITTLE, OF CHICAGO, ILLINOIS.

LIQUID-DISTRIBUTER FOR REFRlGERATiNG-MACl-IINES.

SPECIFICATION forming part of Letters Patent No. 266,680, dated October31, 1882,

Application filed August 21, 1882.

T 0 all whom it may concern Beit known thatIflVILLIAM \V.DO0LITTLE,residing at Chicago, in the county of Cook and State of Illinois, and acitizen of the United States, have invented a new and usefulIniprovenient in Liquid'Distributers for Refrigerating-Machines, ofwhich the following is a full description, reference being had to theaccom panying drawings, in which- Figure 1 is a vertical section, someparts being in elevation. Fig. 2 is a cross-section of the pipe A,showing, also, one coil of pipe. Fig. 3 is an enlarged detail. Figs. 4.and 5 show a modification, Fig. 5 being a cross-section at line 3/ y ofFig. 4.

In refrigerating-machines it is common to use a number of coils, eachconnected with a manifold, through which liquid ammonia or othersuitable fluid is supplied to the coils. Two of such coils are nowconnected with a short pipe from the manifold, in which short pipe avalve is placed, and one valve only controls the supply of the liquid totwo coils. \Vhen a large number of coils are used the expense of so manyvalves is great.

The object of my invention is to provide improved devices, by the use ofwhich a single valve can be made to control the supply of liquid to amuch greater number of coils than at present, which I accomplish ashereinafter fully set forth.

In the drawings, A represents a manifold or main pipe, with which theseveral coils are connected, and through which the fluid passes to thecoils. I

a are short pipes inserted in the pipe A, with each of which short pipesa coil is connected in any suitable manner; or it the coils wereconnected directly with the pipe A, then a would represent the end ofthe several coils.

B is one of the coils.

l) is a main supplypipe, through which the liquid ammonia or other fluidpasses to the pipe A.

c is a valve by which the flow of liquid through I) can be controlled orentirely cut off.

(I d are branch supply'pipes, communicating with the pipe 0. As shown,there are five short branch pipes, c, the upper ends of whichcommunicate with the branch pipes d (I, while the lower ends passthrough and a little way (No model.)

into the main pipe A, opening into a small pipe, f, at its center. Thetwo ends of this small pipe f open into small pipes g at the centerthereof, and the ends of these pipes g open into the tube A.

h are valves which control the How of the liquid through the pipes c.The connections between the several pipes can be made in any knownsuitable manner.

It is important in refrigerating-machines that the refrigerating-liquidbe distributed with uniformity through the several coils, which wouldnot be the case it' the same passed directly into the main pipe A at asingle point. With devices constructed as shown in the drawings, theliquid is supplied through the pipe I), from which it passes first intothe branch supply or distributing pipes d, from which pipes 61 it passesthrough the pipes 0 into the pipes f, thence into the pipes g, fromwhich it flows into A, the flow through each of the pipes c by one ofthe valves h, each valve h, when the parts are arranged as shown,controlling the flow of the fluid to eight coils.

The pipes f might be located outside of the pipe A; but that wouldrequire an additional number of holes in such pipe A.

In Figs. 4 and 5 I have shown a modification, in which the pipe A isdivided into compartments by means of two longitudinal partitions, m a,each of which is provided with holes 1, through which holes the fluidpasses from one compartment to another, and finally into the coils.\Vith this modification I use the same number of valves as before andproduce the same result.

I do not confine myself to the exact arrangement of valves and tubes orpassages herein described. The principle of my invention could beemployed to control either a less or a greater number of coils thanabove stated by a single valve.

\Vhcn the modification is used the main supply-pipe b, the branchdistributing-pipes d, and the short branch pipes 0 will be used asdescribed, except that the pipes 0 will then open into the manifold A,the plates in the manifold taking the place of the small pipes f and g.

The pipes f g can be inserted at one end of I00 the manifold, and thenthe pipes 0 can be screwed into the pipes f, the opening in A,

through which the pipes a pass, being secured 1 against leakage in anyknown manner.

As shown in Figs. 1 and 3, the small pipes f 9, located inside of themanifold A, serve 5 the purpose of passages to distribute the liquid toditferent parts of the manifold. As shown A main supply-pipe, b,distributing-pipes (I 0, and valves h, in combination with a manifold orpipe, A, provided upon the inside with 15 distributing-passages,substantially as and for the purpose specified.

WILLIAM W. I) OOLITTLE.

Witnesses:

B. A. PRICE, ALBERT H. ADAMS.

